#define _CRT_SECURE_NO_WARNINGS 1
class Solution {
public:
    int massage(vector<int>& nums) {
        int n = nums.size();

        if (n == 0)
        {
            return 0;
        }
        vector<int> f(n);
        vector<int> g(n);

        f[0] = nums[0];

        for (int i = 1; i < n; i++)
        {
            f[i] = g[i - 1] + nums[i];
            g[i] = max(f[i - 1], g[i - 1]);
        }

        return max(f[n - 1], g[n - 1]);
    }
};